computer keeps reading o2 sensor. swapped out twice. rough idle getting worst. help.

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01-29-2022, 04:11 AM

#91

Dave51

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And actually, simply replacing fuses and relays can be an effective method of troubleshooting (AKA "The Smoke Test").

Although I tend to look around first...

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01-29-2022, 04:32 AM

#92

Dave51

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Year: 2000

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Quote:

Originally Posted by exasemech

actually the reason car manufacturers do stuff like that (change oxygen sensor connectors) is to reduce the likelihood that things will be hooked up wrong on the assembly line. It's known as human factors engineering. .

Not really. FSM states:

Quote:

Although the sensors operate the same, there are physical differences, due to the environment that they operate in, that keep them from being interchangeable.

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01-29-2022, 06:09 PM

#93

fr3dbilli3

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Year: 2000

Model: Cherokee (XJ)

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Quote:

Originally Posted by Dave51

Not for nothin', but the harness in question is totally accessible from the top:

i think i was getting lost in the sauce and following the wrong wires. this diagram makes much clearer where i should be looking at. thanks for that. will post update once. apologies for the little knowledge and constant back and forth.